Some days ago I found in my IRC server, a couple of “weird” files in the /tmp directory, that obviously I did not create. -rw——- 1 ircd ircd 17251 Jul 8 09:10 robot.txt -rw——- 1 ircd ircd 17251 Jul 8 09:10 robot.txt.1 The content of these files was a malicious script. The explanation about what does this script does can be reached at this link unrealircd reported some days ago (June 12) in their forum the problem. Apparently someone changed the .tar.gz package in their mirrors for one that contained a backdoor (this happened in November 2009). This backdoor allowed any person to run any command with the privileges of the user running the service (this is still remember us[…]